Question

人。我正在撞墙，寻求救济！

我让用户在数据库中创建一个新项目。用户输入故障排除程序（任务列表）和程序的简短摘要（10个字左右）。该过程被添加到数据库中没有问题。除了将其添加到数据库之外，我的代码还需要通过电子邮件向管理员发送审核警报。

警报电子邮件需要包含创建它的人的姓名（没有问题）和摘要。摘要是我被挂断的地方。我试图从＆＃34; ItemInserted＆＃34;中的dataSource.InsertParameters中获取它。事件，它即将出现。

以下是DetailsView的相关部分：

<asp:DetailsView ID="DvProcedures" runat="server" Height="50px" Width="586px" 
    AutoGenerateRows="False" DataKeyNames="ProcID" DataSourceID="dataDvProcedures" 
    OnItemUpdated="DvProcedures_ItemUpdated" OnItemInserted="DvProcedures_ItemInserted" OnItemInserting="DvProcedures_ItemInserting">
    <Fields>
    <!-- other fields are removed from this example to help keep things tiday -->
        <asp:TemplateField HeaderText="Summary" SortExpression="Summary">
            <InsertItemTemplate>
                <asp:TextBox ID="txtProcedureSummary" runat="server" Text='<%# Bind("Summary") %>' Width="586px" CausesValidation="True"></asp:TextBox>
            </InsertItemTemplate>

    </Fields>
</asp:DetailsView>

以下是DetailView数据源的相关部分：

<asp:SqlDataSource ID="dataDvProcedures" runat="server" ConnectionString="<%$ ConnectionStrings:kbelConnectionString %>" 

    InsertCommand="INSERT INTO [Procedures] 
    ([PolicyID], [CategoryID], [Summary], [Content], [CreatedBy], [CreatedOn]) 
    VALUES (@PolicyID, @CategoryID, @Summary, @Procedure, @CreatedBy, GETDATE())" 

    <!-- the remainder of the dataview is removed, so as not to muddy these waters -->
</asp:SqlDataSource>

这是＆＃34; ItemInserted＆＃34;的代码隐藏和＆＃34; ItemInserting＆＃34;事件：

protected void DvProcedures_ItemInserted(object sender, DetailsViewInsertedEventArgs e)
{
    // check for database exception and such. then re-bind the gridview
    if (e.Exception != null)
    {
        lblErrorMessage.Text = "A database error has occurred. Message: " + e.Exception.Message;
        e.ExceptionHandled = true;
    }
    else if (e.AffectedRows == 0)
        lblErrorMessage.Text = "No error was detected, but procedure could not be added to the database.";
    else
    {
        GvProcedures.DataBind();
    }

    // send email to admin
    this.SendEmailMessage(
        AdminEmail, 
        SmtpServer,
        dataDvProcedures.InsertParameters["CreatedBy"].DefaultValue, // works fine, maybe related to manually setting it in DvProcedures_ItemInserting()?
        dataDvProcedures.InsertParameters["Summary"].DefaultValue, // comes up null, although it's good in DB
        "create");
}

protected void DvProcedures_ItemInserting(object sender, DetailsViewInsertEventArgs e)
{
    // set "CreatedBy" attribute for dataview's "insert" command
    // TODO: get username programitically
    string userName = "dvader";
    dataDvProcedures.InsertParameters["CreatedBy"].DefaultValue = userName;

}

我不知道如何继续，所以欢迎任何建议。

谢谢。

注意：我搜索了SO这个问题，发现了两种可能，这些都没有帮助我：

1）Getting Value from DataView C#

建议： string name = dataView [index] [＆＃34; Name＆＃34;] as string; 结果：得到了＆＃34;名称＆＃39;索引＆＃39;在当前背景下不存在＆＃34;错误

2）How to get a value from a column in a DataView?

建议：如果您有DataView而不是DataTable，那么它与DataRowView一样 string val =（string）view [rowIndex] [＆＃34; GrossPerPop＆＃34;];

结果：我不知道如何制作或使用DataRowView

从dataview insertitemtemplate获取文本框值

0 个答案: